Approach structure between different levels and method of producing the same



Jan. 13, 1931. Q lglfgBS I l 1,788,548

APPROA STRU RE 1E'IWEE1\I DIFFERENT LEVELS MET OF PRODUCING THE SAMEFiled OCI.. 3, 1928 HIIIHIHI yz-ulllllllll fllmnllll mmm v WA@ APPROACHSTRUCTURE BETWEEN DIFFERENT-LEVELS Patented Jan. 13,11'9'31 NUNirEDfSTA-'ras fPTEFNTLr Tia-rc COMPANY, INconroRn'rnn, oFjNEw YORK, Ntr., A CORPORATION or Nn'w Yom: l .Y 'p

THE

siiiviiii y iipiicatim. iedociber s, 192s.; serial Nassiasse.

This invention relates to approachl structures between different levelslanda method of producing the same, and more particularly to a rampstructure and a inet-hod of its production. p y c Y V This invention hasbeen found-particularly useful when resurfacing a floor of aroom, or abuilding, which is of the same level ask the floor of an adjacent oradjoining room or building, or of one floor portion with another yportion thereof, with a ceinentitious composition, such as magnesite.4As has been prac-` ticed, instead of removing-the floor material of theareawhich is to beresurfaced, it is used as a foundation for thecementitiouscomposition. `Thus a difference 1n floor levels resultswhich necessitates an inclinedapproach-V or ramp structure-betweenthesel levels.

'sie

The objects of thisinvention are :a simple.

approach structure whichmay be readily and quickly installed and onepossessing Wear re-` sisting and anti-slipping properties, andaneconomical method of producing it. i 1 Y ln accordance withtheaforementioned ob jects thepresent invention contemplates a rampstructure including a framework comprising a flat body `portionwithupturned tapering flanges at opposite edges thereof and providedwith a plurality of perforations in the body portion. When installingthe ramp structure between diEerentv levels the'frameworkis angularlypositionedwith its front edge loosely secured to the floor at the .edge

ofthe portion of thefloorbeing resurfacedy with its iianges turnedupwardly. The ce'- mentitious iioor composition is then positionedunderneath the ramp structure, folc lowing which it is presseddownwardly against the composition. Thus the composition is extrudedinto the perforations in the body portiontoform isolated areas of themagnesite surrounded by a flush meta-l surface, the upturned flangesserving as retain` ingy walls for the composition at either .end of theramp structure. A small percentage of carborundum may be introduced intothe portion of the magnesite upon which the ramp structure is laid toprovide increased wear resistance and anti-slipping properties.

Other objects and advantages of this inoLAUnnTHnononn siniss, F'NUTLEY,NnwfcrnnsEY, 'AssiGNoR To'fwiisrnnN ELECQ.

Y`Jann METHOD or rnonncrNe leon will more-.Clearly -Ppcar' from thev Ythe accompanying drawing,

Vfeatures of this invention between the levels; i Figs@ and l3 areenlarged fragmentary detail sections onk the respectively, thereof;

lines 2-2 and 3 3,

Fig. 4 jis a: perspective Vviewof av member" formingA .the framework ofythe approach structure, and i y i y Fig; 5 -is a view illustrating astep .in ,the method of producing the approach structure oft-thisinvention. l

Referring nowl to the drawing'inf detail wherein like referencenumeralsl designate g similar parts throughout the several views alsub-licor structureflO .supports a floor l1l, one, portion of whichhasV been resurfaced vrck ' with a cementitious composition l2, which .i

may be a composition lof theoXide chloride type, suchas magnesite,whichhas been found suitable for this purpose. This niagn'esite compositionis preferably applied inra `plastic state with a suitable coloringmatter added thereto vtofgive'the desired ,color eect and then troweledto provide a suitable surface as desired.. Beforev applying themagnesite 12lto thefloor `to Vbe resurfaced a layervof 'fvslaters felt13 and above that anexpanded metal platellt is laid' on the floorandfixed thereto, the expandedV plate serving as an anchorage for themagnesite composition Y upon hardening.'

'.The floor portion` to be instanceafmay be; divided 'from' thel rest ofthe floor by a partition or'wallor there may be no structural division,thev latter `condition being'illustrated in the` drawing, Aretainofthefloor not to beV resurfaced Vand forms a .permanent end forf theresurfaced floor, por tion. A metal member 18 forming the framef workofthe approach structure comprises a flat body portion 19 with upturnedtapering .flanges 20 atoppositeedges thereof and-pro,-

lresurfaced,insome 9o ing 'wallfl is' use-djto. preventfthe plastic Ymagnesite :l2 fromilowing onto theportion A Y vis@ vided with aplurality of perforations 21 in the body porton.Y The .upturnedVtapering iianges serve as retaining walls for'the magnesiteat Veither.end ofthe approachor Vrampl structure and at their greatest' heightkare substantially equall to thedepth'of l,the magnesite12 laidon theresurfaced floor por-y tion." When'ready-to'install the ramp struc#ture, the framework Y18 is angularly posi! Y tioned with its front edgeloosely secured to u heoor.l1l,eatthe edgevof theporton there-V of beingresurfaced with its flanges turned upwardly, by means of nails or screws22 inserted through a plurality of the perforations 21 at the front edgeof the body portion 19.

This step is clearly illustrated in Fig. 5.v

Thereafter Ya'` quantity of the plastic magnesite 12 isVforcedvunderneath the framework 18 up to the front edge thereof. V`rlheframework 18is then lowered, pressed and tamped to the requiredposition'and fastened permanently'with a pluralityof flat head j'woodrscrews123 Vinserted through' suitable aperturesY "providedthrough-'theexpanded metalplate 14 and into the wood iioor 1l as-shownin Figs. 2 and 3. rlfhe'felt 13and expanded metal Apla-te 14 it will beobserved extend under the kframework 18 for'only such Ya distancef(Figs.2-

and 3) which wi'llpermitlthe lower surface of the body portion19adjacent tli'eQframe-'f work edge of the frameworklto lie firmlyagainstthefoor11.'`

In pressing' and tamping' the framework into position theplasticmagnesite 12 underneath is extruded into theperforations 211inthe body portion 18, thus` forming isolated area-s ofthe magnesitevsurrounded by aflush metal surface. A Vsmall percentage of car# borundumis preferably*A introduced into the portion ofthe magnesi-te upon' whichthe aperturesof the metal approach framework in the framework,

material. Y

posing the member to provide atractivo surface joining the levels. j j

- 2.Aooo1ood orproooh 'for J'oioos .oliervventoleVGlS, QOInprisingl acementitious comp@ sition containing anabrasive between the differentlevels, and a member having a perfo- .ratedbodyporton lnonnted.l inposition upon he'cementitious composition before cementation thereofoccurs and joining the levels,

.the-'composition,beingeXtruded into the perforations of the member toprovide anexpos'ed tractive surface joining the levels.

' `3. The method of producing an inclined ap# proach at thev junction of'different levels, which -'consists in depositing cementitiouscompositionat the junction lof the levels, and then forming the'composition between the levels bypressing downwardlythereon aperforated member whereby portions ofthe-cementitious composition areextruded into the perforations, and exposing portionsyof thecementitious composition toprovide a tractive surface `joining the'levels, lthe member iirst being engaged with the lowerofthe levels andswung downwardly into Aengagement with thehigherlevel. v

4; A- floor .member proach51conrprising a flat metallic'plate hav ingspaced perforations 'designed to'permit the extrusionoficementitiousmaterial therethrough, and `a o pair of tapered `integraly flangesy at opposite edges of the'plate adapted to serve as retainingwalls for cementitious Vmy name this 24th day of September A. D.,

"- YCLAUDE THEODORE SIEBS.v

a very vefficient tractive surface is provided,

Vand one tending to eliminate accidents due t@ Slipping v101i Ytheinclined-portion of the structure. i f

Anhang-hea inenaonhagteen diseased and described in Vconnection with -aparticular type 'of floor construction, it Vis toV be understoodthattheinvention is capable of. other applications andfshould'be limitedonly by the scope ofthe Vappended claims.- f.. f

i' What is claimed is:

1'. An inclined approach forn joining differentlevels, comprisingamember having a body portion `joining'the diiferent levels with forfaninclined ap-r` an inclined approach

